Train on these maps:
http://steamcommunity.com/sharedfiles/filedetails/?id=213240871
http://steamcommunity.com/sharedfiles/filedetails/?id=368026786
http://steamcommunity.com/sharedfiles/filedetails/?id=243702660

Next, how to improve your AIMS?
1. Practise aim maps everyday (Minimum 1 hour or more a day)
2. Choose a comfortable mouse sensivity and DPI
3. Practise in DM community servers (FpsTH Server) not VALVE servers
4. Use a helpful CROSSHAIR
5. Play with better players to let them teach you what to do in game Ex. ask them a questions and watch them play as soon you'll be as good as him
6. Use PROPER crosshair PLACEMENT
7. Practise you AIM and wrist MOVEMENTS know where your mouse is moving to AIM the enemy ( Two types of mouse movements snapping and tracking ) Practise it
8. Know when to crouch or don't OVER crouching
9. Warm up before playing like exercising and stretch your muscles
10. Have a proper MINDSET always being confidence

So if you practise your aiming and have a good mindset you'll get better soon.
Wrote by jietS

If you want to rank up fast in CS:GO. You just doesn't need to kill alot or being top fragger everytime. You need to support your teammates and help them or playing with your friends only, otherwise you might fight against hackers or play with noob teammates in your team in SOLO. If you want to play with your friends, i recommended to play with the player with close rank to you, full party, or friends that have confident to you. One more thing, if you stop playing competitive matches for 1 or more days, try not to lost your skills. Just keeping training on maps or else your skills will be more rusty and worst.

Hope you understand, have a great day

You guys can learn smoke molotovs flashes spot in each maps from this site :
http://sothatwemaybefree.com/

"LET'♥♥♥♥♥♥♥♥♥♥"