For 10K...
You can not do much with generic or LLL/NNN names.
So, that's out of the equation.
10K isn't much if you don't pay attention and it will be gone real fast.
If you are new to domain, I suggest buy revenue domains.
But, this depend on what you want from this business.
Do you want residual income or investment?
residual income and investment?
Do you want solid revenue or risky but high revenue return?
As for investments...
Do you want solid investments or high return investments?
You best action plan will come only after you decide what you want from this business.
Find one or two respected senior members.
Attach yourself to them, bribe, send flower, send wine, send cigar or just BEG :-D
Ask their opinions when you are buying domains until you are comfortable to decide yourself.