Can u plz tell me some useful websites for solving circuits problems through examples practice?

 

Not sure what you're asking for. We have an experiments area, in Volume VI, which give you a basic grounding in many circuit applications. If you have a specific problem you ask in the General Electronics Chat or The Projects Forum, where specific examples are often given.

 

Try our worksheets: http://www.allaboutcircuits.com/worksheets/index.html

Dave

 

You know about computing, search the different sights you
will find help.

 

While I agree that there are some quite interesting sights on the internet the OP would probably be better off searching for different sites.

 

LOL, i think that you could discuss the issues of PCB from here, there are many experienced friends here, if you want to know more knowledge, you could come here, http://www.pcb-assembly.com.tw, this site specilises in PCB prototype, circuit card assembly, may you have a good luck.