Target self help?

Okay i gotten my team setup corrrectly this time my only questions are when in game i run five resto druids so i need to target myself sometimes instead of auto assisting main. for an example my slaves have "bob targeted" and i need heal on my self but when i cast it only heals "bob" because hes the target that my main is targeting ? point is i need to know how my guys can target theirself and be able to heal anothers?

also when i cast tranquilly they cast and stop and just my main keeps casting weird

Look at the guides here, specifically the ones for repeater regions.

you could try setting your self-cast button in your interface options to alt, and then if you need to cast rejuv and rejuv is your number 2 key you press Alt-2 and it will nullify your target. Just make sure Alt isn't blacklisted on whatever program you're using

The correct target parameter for yourself is "player."

So:

/cast [@player] healing touch

or

/target player
/cast healing touch
/targetlasttarget

etc....