Real Madrid - Valencia > 1 @1.18
Even without Ramos and Ronaldo, I'm counting on Real Madrid to win this game. Previous encounters between the teams showed that many goals are scored. Valencia are also missing Nani, but that should not make a huge difference. The defences have to be on tip top shape, and I'm counting that Valencia's will slip up and make a few mistakes.
Tottenham - Burnley > 1 @1.25
After being beaten by Chelsea, Tottenham needs points. It's still early in the season, but they know every point counts. Burnley are mainly a home team, and don't have impressive results when playing away. Head to head results also favor Tottenham, and they will win today, as they have the better team.
Liverpool - Arsenal > Liverpool scores @ 1.24
Big match today, and I expect to see many goals. Not only because of the previous encounters (3-3, 3-1, 3-4), but mostly because of the way these 2 teams defend - poorly. I don't think Arsenal's defence can stand against Liverpool's attack and not conceive a goal. I would actually say that both teams will score.
AC Milan - Cagliari > 1 @1.30
I hope it's time for Milan to shine again. They won the last 12 games against Cagliari at home, and considering they could do it a few years ago when they didn't have the team that they do now, they should also do it today. Cagliari lost 3-0 to Juve in the first match of the season, while Milan won 3-0 with Crotone, away. Cagliari and Crotone are at pretty much the same level, and Milan is above them.
Total odds: 1.18 × 1.25 × 1.24 × 1.30 = 2.37
After years of trying many styles of playing (betting) , I think that one ticket should have as fewer games on it as possibles. Also, lower stakes are low for a reason - they tend to happen. Combining 2 or 3 matches on one ticket proved to give good results. Doubling your amount in just one day is good. Keep in mind, do not be too greedy.
Good luck!