How do you transfer fuel from a tank to another? And...

[iNUKE]

I see Scott manly videos and hes got so many options to do things when he right clicks on a part...

The only thing it shows to me is infos and stuff.

What mod/mods is that?

[spudman2]

Alt + Right Click

Also, if you run the yellow fuel pipes, found near the end of the propulsion section, from one tank to another, it will automatically drain fuel as your engine runs. They can be a little finicky to place, though.

[Red Iron Crown]

No mod required, transfers are included in stock. Right click one tank, then alt-right click the second. Works for all fuels (liquid fuel, oxidizer, monopropellant, xenon).

[mellojoe]

You can only transfer fuel between tanks on a single craft, or on crafts that are docked together. You right click on one of the tanks, and it will give you a list of the fuel in that tank. Then you Alt+Right Click on the 2nd tank. You will see the fuel in both tanks listed at this point as well as buttons that say OUT / IN. Start your transfer.

Scott Manley has quite a few mods in his games, so sometimes you might see options that are not in stock KSP. There's a post around here that deals with all his mods, but many of them increase the complexity of KSP a considerable amount (life support, deadly reentry, etc). Don't worry too much about all those at this point. ONce you get really comfortable with stock KSP, then you can start adding mods. And only add one at a time and learn it before adding a second. You'll notice in some of Scott's videos he mentions mods conflicting with each other or breaking his saves or crafts. It happens less and less frequently, but it still can happen. You just want to ensure you know which mod does what and which one added a game-breaking conflict so it is easily removed.

Good luck! Keep launching those kerbals

[Commissioner Tadpole]

No mod required, transfers are included in stock. Right click one tank, then alt-right click the second. Works for all fuels (liquid fuel, oxidizer, monopropellant, xenon).

Eletric Charge as well.

[larsmaehlum]

There's a mod that makes it much easier to keep track of the fuel levels in bigger crafts.

Check out the TAC Fuel Balancer mod

[Kasuha]

Eletric Charge as well.

EVA propellant too, between two Kerbals siting in Command Seats. And even intake air between air intakes.