Below are just a few links to articles/videos I have found helpful for beginners in clash of clans. They are categorized by offense and defense articles.
Defense:
Basics on building your base: http://clashofclans.wikia.com/wiki/Flammy’s_Strategy_Guides/Base_Defense_Basics
(Note: This same page has links to go a little further in depth if you feel you need/want more understanding)
Offense (Raiding/War Attacks):
Raiding Basics: http://clashofclans.wikia.com/wiki/Flammy%27s_Strategy_Guides/Attacking:_How_To_Raid_-_Goal:_Get_Resources
(Note: Lengthy article, but definitely worth skimming over. Lots of basic information that is useful to know when raiding)
War Attack Basics for TH4 – TH6:
https://www.youtube.com/watch?v=zb4ir4snA3o
(Note: This is actually a video. Pretty thorough.)
Clash 4 Christ 