ALOT of plants!!

Well today i rototilled(spelling) half my yard, my yard is HUGE! Well I started radishes,carrots,bell peppers,crimson sweet watermelons,onions,tomatos, pumpkins,and catnip  Inside the house in little containers untill the chilly weather passed. Well I planted ALOT of seeds from each of what i listed above because i didnt think alot would grow, Ive never planted befor so i didnt think anything would work well for me. Well I was very wrong haha I seriously have like 20 watermelons growing (sprouting)!! Now doesnt each watermelon seed produce more then 1 melon!? I dont no what I will do with all those watermelons haha I have room for them but thats going to be alot of melons! Also I planted alot of tomatos and onions. I planted about 6 pumpkin seeds and they are all growing/sprouting. Planted alot of radishes and those are doing very very well! Oh and DD the transplant for the radishes went great none of them died! I havnt planted nothing outside yet just in bigger containers, untill i finish with my gardening area and untill i know the snow wont arrive anymore. Oh and i am also growing alot of strawberry plants and they are doing great! I bought them pre grown they were sprouts and they looked like they were going to die, so i planted them in bigger containers and they look very happy now I cant wait till they start growing strawberries! Somone told me they grow like weeds, is that true? Also any advice for all of my other plants?   THANKS ahead of time!!