offline browsing

Yes, try IDM a.k.a. Internet Download manager .
It has a feature called website grabber.

Try winHTTrack.However,its not as fast as IDM.

TRY THIS ONE- PDFmyURL.com - Free & Online: Convert and save PDF from any web page

+1 for HTTRACK
Alternative: Pagenest

I tried winHTTRACK but it was not so good that i couldnt have itemised download option (eg: sound files only). Then i got a sfwr named webripper. its awesome and oodles of options..... Thanks