A lot of seamanship is just basic common sense, im sure there will be some guys from up that way that would be happy to help.
Safety is the first thing and i adhere to a few of my own rules to make sure i keep out of harms way.
If you are unsure that the current sea state isnt suitable then it probably isnt.
Generally anything less than 10 mph winds is good, but remember things can change instantly.
Never go further than you are comfortable with, this will gradually increase with time and experience.
Always take more fuel than you will need.
Always take spare spark plugs and a plug spanner.
People say a GPS isnt necessary, but should the worst happen you have a position that coastguards can use to reach you quicker than if you just said " about 1 mile from the piers"
I always take a Battery booster in case of a sudden flat battery, this can be a life saver.
And some of the obvious ones, life jackets, rings, VHF radio, flares, anchor with sufficient rope.
All of the above i consider essential before heading out to sea.