sail size and design,shape

[crivisteel]

excuse my english.
I have a fiber glass sail boat ( L.O.A. 3,50m ) I'am a beginer and I do not know the boats system of mesurement the hull is 1,30m large.
I do not know to make the sail for my boat (mast height ,boom)and a dagger board(size and material, how deep in water ) and how beeg weel be the rudder.
I do not know what kaind of material to use for my sail ( ceap one )and for degger board
Is good wood for mast and what kaind of wood to use
I want my boat to have 2 sails (one in front and one in beck(main sail)

[Raggi_Thor]

Take a look at other boats of the same size.
Wood like spruce is good material for the mast and boom.
Mast length of 1.5 x boat length is quite normal.