well,its possible but not recomended la unless u only want to play popular music lo.

but if u put effort,theres alot of online lesson ,google it out, or on youtube.
i think youtube is a good place,cause whatever i dont understnad bout guitar,i can check on youtube,so i think youtube will have piano lessons

hmmm. categories as POP then.
i guess those kind of songs are quite easy to learn if u put effort in it.
good luck. maybe u can enroll in music class for 1-2months to understand the basics?? and u can quit after 2 month. after that watever u dont understand refer to ur friends or internet^^

haha, if kao lui learn electric guitar more easy^^

back to topic: yes, its possible to learn piano from friends directly.

but under few conditions lo:

-ur friend must be very good or else u wont get to suck much out of him

-buy ur own piano/keyboard, this will show ur friend that u are serious

-always practise before going to ur friend!! u dont want ur friend scold u like kanasai because u never practise

rm100++ to cheap a budget.

keyboard alone cost 300-800 ( i guess)

if piano second hand also cost at least 1500-3000++

so if u are really serious, it will be worth the effort

KEyboard veri Important dude. go think back ur CHILDHOOD, remember the POKEMON THEME SONG??! Without the keyboard it will just sound PLAIN.^^
hhmm, takes 2-3 months to learn the basics( It will take longer if u lelong, but if u are serious ,and practise 2-5 hours aday,*ur free right??* u wil get the hang of it )

in that 2-3 months, first learn easy pieces * go any music school and pick the bigginer book or take a few months of lesson* then straight away practise ur song, PRACTISES IT EVERYDAY, and i tell u wat, playing piano is like miracle happen

Example( real life experince)

today u play this part, play like shyt, SHYT SHYT!! no matter how hard u try but just seem that u cant achieve it, BUT U MUST KEEP ON PLAYING NO MATTER HOW HARD IS IT!

the next day u touch that part again ,it wil just seem perfect( serious) its like the brain interpret the data during ur sleep!!!

so good luck!!

*i guess u are really serious cause u take the effort to search for a keyboard good luck again dude!*