TOPIC: how to configure and be able to ping

i was do delighted when i chance upon this page. i have been browsing and this is the only one that i think can help me how to understand how to configure all of these.
am a student (maybe all of the members here are pro) and i have read a lot of reference books etc but still confused.
please help me. i dont want to fail this class.
thank you.
how would i configure routers with single-area OPSF,EIGRP AND 802.1q VLAN trunking.
configure the switch for VLANs, spanning tree and trunking
configure Host A in vlan 10 and Host B in vlan 20

There are loads of documents on Cisco's website as well as tutorials on google on how to configure these things. I doubt anyone will have the time to show you step-by-step if thats what you want.

VLANs, VTP etc: http://www.cisco.com/en/US/tech/tk389/tk689/technologies_configuration_example09186a008009478e.shtml

Routing protocols:
http://www.cisco.com/en/US/docs/ios/11_0/router/configuration/gde/ciproute.html#wp1929

You can always ask specific question and be sure to get answers from the guru's here.