How to start an maintain my YouTube gaming channel?

I already have my name secured (Dr. Phantom). I don't have anything in my channel right now.

I'm very limited with the games I own, which are all on PC. I have Minecraft, Resident Evil 5, Left 4 Dead 2, and Skyrim.

I plan on making videos of my Minecraft creations, do Minecraft tutorials, Let's Play, mod show case, and multiplayer mini games.

I also plan on doing a Let's Play of Left 4 Dead and a mod show case of it. And also a Let's Play of RE5 and Skyrim.

I can't buy any games right now.

Added (1). Any other ideas?

Well my suggestion would be avoid, Minecraft. So many people do let's plays the odds of you getting many views is very slim. You want to build up your channel with other content and then post Minecraft. But left 4 dead 2 and Resident evil 5 are both kind of dead games. No one really watches people play them anymore. So you might try Skyrim even though it may also be dead, I'm not sure, maybe some walkthroughs for parts you think people would find difficult. That might help you get a general subscriber base. But if you don't like any of these suggestions try doing some multiplayer stuff on minecraft that always gets my attention. Like some PvP or even just some multiplayer survival worlds.

Post frequently
That will get you started. And don't stop posting or get discouraged. You well prevail

Check out my channel?