For my seventh birthday, my father gave me a special gift and I clearly remembered that present.
When you put 2 complete sentences together as a compound sentence, you are supposed to use a comma. In this sentence, a comma should go after "gift." However, many people do not use commas properly, so it is not an important mistake to correct.
Books are important helping equipments, which has a profound effect on the reading and writing skills of students.----the word equipment it not correct here. Equipment is never written with an s at the end, because equipment is already plural. The correct word to use here is "tools."
Books are important educational tools which have a profound effect on the reading and writing skills of students.
And the way to use has and have is like this:
A tool has..
Many tools have...