Ok guys as everyone probably knows I'm a beginner, so I have still a lot to learn about many guitar features.
Anyway, I was trying different alternate tunings, and the 2nd string suddenly broke due to too much pressure. Should have been more careful I know. My guitar is an Ibanez GRX40, as shown here: 
http://cachepe.zzounds.com/media/qualit … eddebc.jpg

I already have 2 sets of strings packs, but my questions are:
1) Should I change all strings at once?
2) I just pull out the strings from the back, and insert the new ones the same way, and tie around the tuning heads, rotate and tighten the strings, and thats it?
3) How to cut off extra string parts? scissors?

Try this web site.  I used it the first time I changed strings on my Epiphone acoustic.  It also covers electrics.

http://guitar.about.com/od/guitarlesson … trings.htm

Hope this helps,

Dean

Hi  zuhairreza,

1. Yes, but maybe no. If the others are fairly new, you'll be ok. If no, replace one at a time. See 2.

2. In the case of the broken string, remove as you mentioned, now go to youbtube and type in
'changing electric guitar strings' and learn about putting the new string(s)on. Be sure to do the
locking thing...if a vid you view doesn't mention that, keep looking...there are lots. Then wind the string
on making sure the turns go down the peg...since you left slack like in the vids you watched, you should
have from 3 to 5 turns once the string comes up just tight. Now tune the string with your electronic tuner.
Make sure you watch a vid that talks about the stretching by lifting the string up from the fretboard method
then do that. Re-tune. It will take a few more tunings over the next day or two before it stays tuned prolly.
If you do all the strings, do them one at a time and in the same manner, that way you'll be able to put the   
new ones on just like the originals.

3. Not yer mum's scissors...get yer dad's nice wire cutters and cut at a right angle, not a diagonal or you'll make
a really sharp end.

4. Once you tune the string(s) with your electronic tuner, check each one while pressing them behind the 12th fret.
If they're not in tune at that point, ask us about 'intonation'. This can be a 'not for beginners' step but some here
can guide you through 'intonation' so you don't break anything. If you only change the one string and if you luck     
out, you won't have to think about it. Let us know how you came out zu !

GuitarZen
     

zuhairreza wrote:

1) Should I change all strings at once?
2) I just pull out the strings from the back, and insert the new ones the same way, and tie around the tuning heads, rotate and tighten the strings, and thats it?
3) How to cut off extra string parts? scissors?

these are good questions. i might add that there are two schools of thought on changing strings  I always replace all six if one breaks that way they wear evenly. as for if you do them all at once or one at a time in terms of all six off all six on vs one string then pull another then another etc . this method allows your guitar to keep some of the tension on the neck that is provided by the strings so t never lets the tension off. doing all six at a time allows you to clean your guitar which is something i like to do when i change the strings. However note that some guitars you definately do not want to remove all six at once as this can really mes things up aka anything with a bigsby or a floating bridge such as my gretsch.

Thanks GuitarZen, thanks to CRider and Dean too, yeah it worked out ok. i replaced the strings.
i was hoping to remove that dratted pickguard too, and the moment i did so, electronics and wiring came out, which i had not expected, as lots of others had said that the body would be underneath. Quickly 'reverted to default' before I messed up anything!
thanks guys!

On a Strat style guitar (pick guard style anyway) there will be a lot of routing. You definitely don't want to remove the pick guard. However I'd submit that a perloid pick guard would look really good on that guitar.

Also unless you have the bridge sitting against the body of the guitar the trem will go out of tune whenever you touch it. If you can live without the occasional dive bomb I'd look into blocking it. My first guitar was an Ibanez EX-170 with a similar bridge and I did just that.

If you find you break strings a lot at the saddles I'd have a look at graphite replacements. That was another mod the EX-170 saw (for that reason in my case).

I also ended up putting locking tuners on it, having a bone nut installed, and ripping the electronics out in favor of a single Seymour Duncan Custom Custom wired with only a volume knob. Stickers served to cover the pickup, tone knob, and pickup selector holes.

A bit of rambling, I know. I don't post often though so I think I'm entitled.