This is some basic equipment you should make sure you have onboard.
For the warmer days you can wear a simple combination of a normal teeshirt and some comfortable trousers/ leggings, or a short wetsuit. If the weather is a bit cold or windy I would suggest wearing a long wetsuit and on top of that a spray top which will give you more protection. Along with that wear some waterproof shoes to prevent slipping and hurting yourself. Remember to wear waterproof suncream and sunglasses or a hat. You should also wear a life jacket, a whistle or another type of sound signal such as a air horn, in case of emergency and gloves (optional) if you don't want to get blisters on your hands.
Some extra equipment your boat should include is a bucket or paddle in case water enters the boat, a buoyant or another throwable floatable device like a life ring or a cushion with straps, navigational lights if you are planning on sailing in conditions with bad visibility.
Knot terminology
Bight: Section of the rope between the working end and the standing end.
Loop: Part of the rope that is bent so that its parts come together or cross each other.
Standing end: Part of the rope not being used.
Working end: Part of the rope being used to tie the knot.
