Help!!!!

[skinnyRob]

In 24 years old 120 at 5'11 i want a good way to gain weight But not as in fat weight i want to get abs i got abs when i flex them but i want them to show with out NE idle would help...

 

[Liquidex]

Advice For Hardgainers - YouTube

Watch frame by frame and write a detailed Essay in 283240912834 words before jumping on juice

 

[HFO3]

Easy answer:
Buy and read a or a few books on BB nutrition and then buy a gym membership, use them both all the time. It's not that hard to do, it's a daily decision.

 

[Powermaster]

In 24 years old 120 at 5'11 i want a good way to gain weight But not as in fat weight i want to get abs i got abs when i flex them but i want them to show with out NE idle would help...

Simplified answer:
1) Weight train
2) Track Calorie & Macronutrient intake
3) Once you do above, realize that you have to be in a caloric surplus to gain weight but not so much to gain fat.

Like the above posts suggests: Do more research to refine the variables.
Your goal is realistic but it is going to involve getting it all done right and at the right time.