You'll have a total of 2,160 points (worth £15) in your account so you can visit the 'rewards store' to choose which gift card you want, which you should do before the sale ends on Wed 24 Oct. The gift card will then arrive within 10 working days, either by post or via email in the case of voucher codes. You can also convert your earnings into PayPal cash but it costs more points (800 SB = £5 PayPal).
Find a profitable niche. Starting with your interests, write down as many niche ideas as you can. Think about topics people might search online. Ideas include passions (like surfing or body building), fears (like spiders or speaking in front of crowds) and problems (like getting out of debt). Do keyword research to see it others are interested in the topic. Find out if a domain name is available that matches the keyword 100 percent. 
There are many ways to get people onto your list. Lead magnets are one such resource. For example, you can build ebooks, checklists and cheat sheets. But you can also do content upgrades, such as PDF versions of an article with added resources in them, four-part video training series, and more. Think about your audience and what you can offer them to better serve them, then treat them with some respect and you'll eventually reap the rewards.
Host a yard sale to get rid of things you don’t want anymore. Clean out your room and gather up all of the toys, decor, and clothes that you no longer use or want. Display your items on a folding table in your yard or driveway with your parents' permission. Put prices on each piece with a sticker label based on what you think it’s worth and the original price of the item.
If the above locations do not yield information pertaining to affiliates, it may be the case that there exists a non-public affiliate program. Utilizing one of the common website correlation methods may provide clues about the affiliate network. The most definitive method for finding this information is to contact the website owner directly if a contact method can be located.