Here there are some links to different sites with exams from some Spanish regions:
Exámenes Andalucía (Distrito Único)
Exámenes de Selectividad resueltos de toda España
Exámenes de Selectividad de toda España
Use this link to do online activities about the most important grammar points studied in 2º Bachillerato:
http://mbonillo.xavierre.com/grammar/2bch.html
Use this link to do many reading activities about a great number of different topics (self-correction):