If this question pertains to football, home or away involves the two opposing teams. The first named is usually the team with home ground advantage while the other team is playing away from home. Regarding 'over 1.5'. this means betting that at least two goals will be scored in the match.
In a +1.5 handicap bet, the team that is given the handicap needs to win by two goals for the bet to be successful. The two teams are given virtual goals, so that the total number of goals for both teams is equal. If a team wins by one goal, the bet is deemed a draw and the stake is refunded.