Try to learn the cpl maps which are, de_dust2,aztec,inferno,nuke,prodigy and cbble. After you learned how to aim and know the maps then play mix(scrims) and join a good clan
. Also go to www.sogamed.com and create a login and post on the forums if u have got any questions
Oh ya, disable the winxp accerelation which is a pain the ass
Download it here
unzip the file and open it, click on yes and reboot.
Also if you have got ur steam client on, go to Games and you will see all the games like Halflife, Counter-strike and all, rightclick on Counter-strike then click on properties and then go to Launch Options. Add this lines
-console -noforceparms -noforcemparms -noforcemaccel -noforcemspd -numericping -full
It will also disable the accerlation in game.