Don’t give new members access to your entire site immediately, instead you can set some content to be made available to specific Membership Levels only after they have been registered for a certain number of days. For example, you may want a post to appear each week after a new member signs up. This can be done very easily with WP-Member’s “Drip Feed” feature. Just set the Drip Feed options on any post or page and the rest is done automatically for you.