Hello,i would just like to mention the face that you don't need a lot of materials for a ritual,if it's an esbat/sabbat ritual,you can just do a cleansing and a prayer,then just add in whatever magick you may have planned to do,i just wanted to bring this to attention because i'm not sure how many people know you can just do this if you don't have much,i don't and i just do that,thank you for reading and i hope this will help someone,i just wanted those on here who don't have much to know that.
Yes there is no right or wrong to say ritual. you do the best you can with what you got. Over time you will add more to your routine. What i do is, i cast the circle, call quarters, invoke whatever god/dess is needed, do my magickal workings, then thank the god/dess, release quarters and circle. there are various formats for rituals, though.