can anyone recommend a good heroes for newbies/noob

i just started playing this week..sucks really..nver kill 1hero before

and i always make mistake by clicking left click + a,or skill

then it highlight the oppenent heroes..

in form 3, i took DK and my friend viper. we got our ass-kicked by this chinese brother using viper. 2 on 1 also he can get godlike 
so embarassing..
then i didnt play for a long time, in university started again in second semester. i used veno n kicked people's ass
that time berlagak as if i pro la.. hoho
but now go to dotapod sumtimes i get pwned kaw kaw.. hahaha

p/s: didnt play in flying spaghetti monster coz some hosts r crappy 
sori g@rena change into spaghetti monster alrdy. hahaha