I am looking for a macro that gives my alt the same target to heal like me. Like this: I target myself and he heals me and i do, i target him and he heals himself and i do, if i have no target we both heal our owns.
This is done by making all of your alts heal spells be "/cast [target=focustarget] Greater Heal", and setting your focus to your main before running around.

I am looking for a macro that shows me EXP to next level on my alt.
For this, I use the Fubar add-on compilation. Theres ExpFu (an extra for Fubar) that does that.