I am looking into buying a Chromebook can anyone give me pros and cons? also will i be able to install flashplayer on it ?

Do a quick search in the PC Hardware section (it's neither a tablet nor an e-reader, really) for loads of info on the Chromebook:
http://forums.digitalspy.co.uk/forumdisplay.php?f=40

For starters:
http://forums.digitalspy.co.uk/showthread.php?t=1902222
http://forums.digitalspy.co.uk/showthread.php?t=1863697
http://forums.digitalspy.co.uk/showthread.php?t=1837382

Thanks for that will do.