[afterburn 549]

Common since is a BIG factor in living, flying, sailing what ever
To hoist a main sheet and a jib is no big deal...Now its settings can be refined and no school will teach you that and every boat will be different depending on conditions.
The basics will be found in any book.
Knowing what the tide is doing is a good thing...
Being able to throw a GOOD anchor over in short order is a good thing.
dropping the sails in short order and becoming a motor boat can be a good thing..
Most Marinas will not permit you to hoist a sail inside them with dam good reason..
To sail is best pictured as a water melon seed...two forces ..like your thumb pushing the seed dwn on the table..it will squirt somewhere.
The wind of the sail is pushing (pulling) the boat over, the keel is resisting the force from lateral movement..the boat moves ahead..(I stole that illustration from somewhere)
All of this can be learned by yourself if you go out on fair days..and i am a fair weather sailor by choice...The excitement of a knock dwn is not that thrilling to me..but, you need to know what to do in that advent (release the main sheet for one)
Depending on a bilge pump(s) to save you is pretty cocky and for sure arrogant.!! They are for nothing more then stray water removers..most think they are a life saver NOT!