Well... toke up, then when your mouth were full of smoke, breathe in and make sure that all the smoke enter your lungs... if you cough a lot, is because you did it right... then hold the smoke for some 5 seconds and then release it...
Several people doesnt get high during their first times... mostly because they dont know how to inhale properly. So, inhale, INHALE the smoke... feel it deep in your lungs... depending on the quality of the weed, some two or three tokes must be enough.
If you inhale correctly, after some time you may feel a slight relaxation... like... the body feels a bit heavy... the eyes goes a bit unfocused... the mind seems have slowed down a bit... then... suddenly... woooooooooooooooooooooosh........ you forgot everything... you stops and thinks "what i was thinking one second ago?" "what im doing here?" at this point everything seems funny... so laughing is the only thing to do... and you laugh and laugh... and everything seems weird, different... like... the colors seems brighter (like if the illumination were stronger)... sounds seems sharper... music is amazing... eating is wonderfull (so the munchies...)... and everything is allright... you are at peace with the world...
Well.. i could go on and on, but the words are not the best way to describe the high... smoke it, and you will know everything that mere words cannot reach... :stoned::rastasmoke::jointsmile:
And welcome to the wonderful world of weed!
Enjoy your stay, bro! :thumbsup:

PS. There is several threads about it... maybe searching isnt the best way to find them... just look at the experiences sub-forum (this one we are right now), and also the recreational sub-forum... you will find a lot of good advice.