Create a forum signature with your link to your project page in it.
Typically, this is done by accessing the User Control Panel on the forum, and then editing the Profile section where the Edit Signature option is.
Now, if you don't know what a forum is, then it is a place online where people gather and congregate to post messages and to carry on conversations over an extended period of time. If you've never been to one, before, then don't worry. By and large, they tend to be interesting and worthwhile things. I've used forums for years on end, and some can even become a home way from home, so to speak.
Now, if you're brand spanking new to crowd funding, then you could do a lot worse than to make your way on over to Salvador Briggman's KickstarterForum.Org forum. I hang out there, as do numerous other people who have already posted a whole bunch of messages about all sorts of different things related to crowd funding and improving project pages of project creators like yourself. Did I mention that it is free?
Head on over there, and create an account for yourself on that forum by registering. Basically, that involves creating a user name to post messages under (so that everyone can keep track of everyone else), and coming up with a password - so that you have a means to log in, each time that you visit the forum. None of it is rocket science.
Now, after you create your account, there is a link located at the very top of the page called User Control Panel.
Click on it, and you will then see something that looks sort of like this, provided that you have created your account and logged in, already.
Next, click on the tab that says Profile. It will then take you to a screen that looks similar to this:
And here is what my forum signature on that forum currently looks like, to people reading messages that I have posted there:
NOTE: Some forums on the Internet disallow forum signatures, altogether, while other forums impose limited of various sorts on what you can put in your forum signature. Some forums disallow images in forum signatures, while others disallow links to other websites. Some forums are lenient, and some are strict, where the use of forum signatures are concerned. But, even if you can't use a forum signature link in every forum that you visit or use frequently, take advantage of it on the forums that you do visit or use frequently. A forum signature can lead other people to your crowd funding project page.
After you create your forum signature, be sure to hit the Submit button or the Save button, depending upon which forum that you are on, so that the forum will retain the information that you post in your forum signature section.
A lot of forums use something called BB Code, these days, which is simply a means whereby you can make text perform other functions, such as converting text into a link to your project page. For a good, simple example of how to create a link using BB Code, I suggest that you refer to the BB Code website's page dedicated specifically to that purpose, which can be found by clicking here.
BB Code definition: BBCode is short for Bulletin Board Code. It is used as a way for formatting posts made on message boards, blogs and more. It is similar to HTML in the sense that in BBCode one does also use tags to format something specific (contained within the tag). In BBCode tags are indicated by rectangular brackets surrounding a keyword, which is in turn transformed into HTML before being delivered to a web browser.