If you sign up for something, you are registering or subscribing to a service or an activity. You give your name and details so you can be part of a program. You are on an official list of participants or clients.
1. The best way to follow my blog is to sign up via email. That way when you register your email address, you will receive a daily email reminder with the link to the post.
2. Most cities have volunteer programs that you can sign up for. You can participate in programs to help the terminally ill, old age people, orphans, animal shelters etc.
3. If you’d like to start a new hobby, you can sign up for dance class, language classes, mixed martial arts, art classes, cooking courses, guitar classes, drumming… or whatever else you’re interested in.