"To get in touch with" means to communicate or contact someone, usually by phone, email, or meeting in person. It refers to reaching out and establishing a connection with someone to exchange information or have a conversation. Full definition
If you are interested in getting involved as a school rep or would like to know more, then please get in touch with your local association. (tes.com)
As a free member you're very limited in what you can do in terms of getting in touch with other members. (straight.sex-dating-reviews.com)
Obviously, you need to proceed with caution when revealing parts of your book online, so only get in touch with people who are trustworthy. (edwardsbrothersmalloy.com)