Planning.
Thoroughly plan out each detail of the process.
What type of program will you have and how  are you going to do it? Who is going to do what? When will it be done?

Preparation.
Prepare. Prepare. Prepare.

Promotion.
Decide how you are going to get people to come.  Who, When, Where, How, and by Whom.
Be timely in the promotional effort. Begin sufficiently ahead of the meeting date to distribute flyers, publicize, and invite people. The most effective method of securing guests is the one-on-one invitation.

Presenting the Program
Think out the program from beginning to end. From the time a guest reaches the door of your meeting room or building to the time they leave. Greeters. Handouts. Name tags. Seating. Introductions.
Deliver the program with each member fully prepared and ready to perform his or her portion smoothly and with enthusiasm. Be on time and have time available for guest comments.

Prompt Guests to Join
Give a warm, friendly invitation to join. Mention economy of membership and value received. Introduce the club's Membership Vice President (have membership applications readily available). Invite back. Visit with guests after the meeting.

Pursue the follow up
Send guests notes thanking them for their attendance. Invite them to visit again.  Call and discuss their ideas of the meeting. What did they find of interest, etc. Include their name in the Club's  newsletter or a meeting report and mail a copy to them.

There are numerous little steps:

Greeters at the door providing a good “Welcome” projects friendliness.

A table with visitor materials helps prepare guests for the meeting.
Guest book, guest cards, name tags, club brochure, T.I.  brochure,  membership benefits, membership application, information explaining functions, Club Newsletter, “Welcome” letter by the President, etc.— all indicate thoughtful preparation and consideration of guest needs.

Members wear name tags. Members visit and talk with guests, rather than among themselves.

A printed agenda with meeting format and participants helps acquaint guests with the program's continuity.

An introduction which builds up each guest at the beginning of the meeting indicates to them they are appreciated.

Knowing the club’s dues and how to complete a membership application form helps guests become  members in a professional non-confusing manner.