You can sign up for IFTTT with your email or with social login.
IFTTT has several plans. You can start with a free Basic plan. This plan allows you to have 5 applets (connections). To be able to create more applets you need to upgrade.
Here is your step-by-step guide:
1. Create an account at IFTTT
2. Create an IFTTT posting campaign at RSS Ground (to make automated posts).
3. Or create a personal feed at RSS Ground (to collect targeted content)
4. Create an applet (connection) at IFTTT with RSS Ground as a trigger (to make automated posts) or as an action (to collect targeted content).
Read more about starting with IFTTT