i need some help. i'm a first time wordpress user and i set up my site (site4), but there are 3 other domains (i.e. site1, site 2, and site 3) that i own that i want to redirect to the main one. i also would like to replace the url with the main one - site4. so if someone types in site1, for example, it will go straight to site4 and replace the url with site4.
how do i do this? many thanks in advance.