Video making equipment (gathered from comments or what he's said in videos):
Video recorders:
PC games used to be recorded with Fraps, but recently Max has switched to Bandicam.
For early let's plays on consoles, he used a Dazzle.
In mid-2014, he switched to a Roxio game capture card.
In early 2015, he switched to and currently uses an Elgato game capture HD recorder.
Live action stuff used to be filmed on an unspecified video camera, though he now uses a GoPro or his phone.
Audio:
He uses, and has always used, Audacity to record audio.
His first microphone was built into his computer.
After his Ocarina of Time playing, he upgraded to a Logitech gooseneck microphone.
In 2013, he switched to a Blue Yeti, which afterwards he still used for non-let's play videos until mid-2015.
In early 2014, he switched to a Turtle Beach headset mic for let's plays only. This can actually be considered a downgrade from the Blue Yeti, though admittedly not by much.
In mid-2015, he switched to and currently uses an Audio-Technica AT2020 cardioid condenser microphone.
Editing programs:
He started out using Windows Movie Maker.
In 2012/2013, he switched to Vegas Movie Studio 8.
He then switched in 2013/2014 to Movie Studio Platinum 12.
In late 2015, he upgraded to Movie Studio 13 Platinum.
Max's usual intro ("What's up, YouTube? This is RLYoshi as usual") was coined back in Paper Mario: The Thousand-Year Door, his second playthrough ever, and is still used to this day.
The very first sound in Max's let's plays, way back in the first part of his Ocarina of Time let's play, was a lip smack.
Before he did let's plays, Max made Super Mario 64 machinima. All videos of this sort have since been deleted, but references to them in his much older videos and comments can be found.
Max once had, but removed, a let's play of Slender that was uploaded sometime in 2012. To date, it is the only let's play video he ever took down.
The creator of Part Time Job saw his let's play and apparently liked it.
Mental Block Gaming, the creators of the Templars of Hyrule map, are following along the Mirror and Sol playthrough of it and enjoying it. They even gave Max a tip on one of the puzzles being potentially broken and how to fix it.
Blue Giraffe, the creators of the Heart's Medicine series, credited Max (and by extension Rhino) in the credits of Heart's Medicine - Hospital Heat among other streamers and let's players for doing the first two games in the series.
Artist Disillusionment: Max frequently regrets making Cutie Mark Laboratories because every time he tries to focus on something else, fans come out of the woodwork to yell at him to make more. At the same time, though, he does appreciate that people like it, and he does work on it when he can; he just hates that people think "when he can" means "every waking moment". This eventually led to him declaring the series dead.
In-universe: The line from Army of Two: The Devil's Cartel that Max and Dan found so amusing was "Girl don't nobody give a fuuuuuuck!". When quoting it, however, they almost always drop either "Girl" or "Don't".
It's usually assumed that Max was the one to start calling Jero a "bottom bitch". In actuality, Jero was (jokingly) called this by Jesse Cox when he asked a question at the Pax South 2016 Cox and Crendor panel, and Max just decided to roll with it.
"Canadaman says peace and love!" is a frequently quoted line from their GTA Online videos, but the actual quote is simply "Canada says peace and love!"
Max, Dan, Rhino, and Jero were all immensely relieved that they never had to play Fortune Street again. At the very least, Max stopped finding the game fun (on its own merits) not long in, and he said that besides maybe Rhino, none of them want to touch it ever again.
His Ocarina of Time let's play; he really doesn't like it.
His work in ERBParodies, and the rap battle community in general. He no longer talks about it.
Pretty much anything he did pre-2014 falls under this, with few exceptions.
His second Cutie Mark Laboratories episode on whether or not Rainbow Dash was a lesbian. Since the episode was made back before he really did serious research, he resorted heavily on random assumptions and Insane Troll Logic for entertainment rather than accuracy, and he has stated he no longer believes a single word of the episode. Best exemplified in his more recent "Would AppleDash [shipping] Work?" episode, where he states there is no proof whatsoever of Rainbow Dash's sexual orientation; the thumbnail of the "Is Rainbow Dash Lesbian?" video creeps onscreen, and he suddenly lashes out at it and says to "get that bullcrap video out of here", sending the thumbnail flying away, before going right back to calmly speaking.
Development Hell: The third board of Minecraft Party, Towers of Torment, had its first episode released on October 4th, 2015. Over four months after the finale of the previous board, Vault 14.
And then Strife Clouds started being released near the end of February 2016. Almost five months after the previous board.
Later boards have taken even longer, which is odd when you consider that (as of this being written) only six boards have been released in full while eight have been recorded.
Fallout 3 and HuniePop fell into this as well. For the former, it was due to an Epic Fail on Max's part believing he somehow lost the save data when it was just on another account all along; for the latter, it was due to trying post-recorded commentary over the date puzzles, only to discover this wouldn't work and leaving him with "incomplete" commentary. Both were eventually resolved - the former due to finding the save data, and the latter by just temporarily speeding the dates up and having shorter episodes for a while.
He Also Did: Fans of Cutie Mark Laboratories usually ignore Max's let's plays or are unaware they exist.
The Pete Best: Zero first appeared to replace Marioman 2233 as a guest commentator for Battletoads. Before 2016 he was probably one of, if not the, most well known guest on the channel, while very few people even remember Marioman.
Despite having an almost identical name, Peter Best applies on the opposite end; he and Schuyler both first appeared way back in Max's Ocarina of Time playthrough, and while both kind of switched back and forth with who was appearing in episodes, Schuyler appeared first. Yet Peter appears in far more stuff and is more easily recognized, while Schuyler has been absent for years, and any returns he has are often very brief.
Throw It In!: Max often puts little clips at beginning of episodes before the episode actually starts. Usually these clips are of things that happened before the recording officially started, such as conversations.
The Pokémon Showdown Tournament was going to have eight people from the channel, plus four special guests. Most of the guests Max invited declined, however; only Squillistipated agreed, meaning they had nine people. Dan, who was planned to be the eighth person from the channel, volunteered to drop out, allowing it to be a simpler eight.
Max and Rhino were going to have a race in the original Portal, not Portal 2. However, Max had framerate lag (which, for some reason, didn't occur on the more intensive Portal 2 or Aperture Tag), and eventually they called the race off because he was at a clear unfair disadvantage.
A lot of let's plays got cancelled due to intensive editing and low viewer interaction.
Word of God: Max has a Twitter and Tumblr account, which he sometimes uses for Foreshadowing or justification.
at the Pax South 2016 Cox and Crendor panel, and Max just decided to roll with it.