Merging overlapping points

Hi I would like to know how to merge any overlapping points together and clean the mesh please could someone help please thank you

If the points are directly overlapping, in edit mode, select them in wireframe so you make sure you get them all, then hit Ctrl+V for the vertex menu, then select d to remove doubles. If you press F6 once you’ve done this, it pops up a panel and you can adjust the threshold for the merge. Be aware, if you set it too gih, it may start to merge points you didn’t want it too.

really appreciated thank you

Adding to this, pressing “W” will also bring up the remove doubles option.