Hi, so I've played the game now almost six months but only now aligned to a Power (Li whatever for his packhounds!!... because I'm an unskilled pilots so need hundreds of missiles

) but last night I spent a couple of hours to only earn 50 merits (delivering 10 control cargo 5 times, buying one reload at 100k CR) so wondering how I can gain merits quicker.
I remember vaguely something about 30 merits per undermining kill but I've no idea where or how to do this? I'm currently in Lembava, Li's HQ; if that helps your pointers at all??
Thanks
1) At rank 1 your powerplay commodity allotment is very low (10t per 30 minutes or so). The amount of allotet comoditys will raise with your rank. So waiting for the cargo hold to fill with commoditiys will get a bit easyer later.
2) Also you transfer half of your earned merits into next round each week. So climbing ranks or keeping a rank is not that hard work.
3) Combat merits:
Undermining: To do this you go to the control-system of another power (look at the powerplay map) and shoot your targets there. They will have special names on them like: "Private Securitys" for Torval, "Imperial Support" for Patreus und Arissa, "Alliance Diplomats" for Mahon. You will want to equip a FSD-interdictor becouse you will have to pull your targets out of supercruise.
Attention: you will get wanted by shooting clean targets, regardless if they are powerplay tagged or not!
Opposing or aiding weaponized expansions:
You can always earn merits to go into another powers weaponized expansion and oppose or support it. Only powers that have military expansion ethos have those powerply combat zones. They are: Arissa Lavigny-Duval, Denton Patreus, Zachary Hudson, Yuri Grom and Archon Delaine.
To aid or oppose such a weaponized expansion you have to look on the powerplay map first. Go into the view for one of the military powers named above. Check the box for expansions and find the expansion you want to aid or oppose on the map.
Go to the system and look for a combat zone with an odd name like: "Resistant Pockets", "Military Strike Zone",
I am not 100% sure anymore if it is possible to chose a side on the side-tab. But when I remember right you can just chose a side by shooting the right ships. You should get merits. EDIT: maybe this got changed with 2.2.03 patch. Maybe you only get Merits for enemy powerplay ships in theire "home-territorry"... you have to try out
Mind that you have to deliver your combat merits to a control-system of your power. You can turn them in in the contacts menu of any station in a friendly control-system. Only if you have turned them in they count. If you are destroyed with mertis on board they are lost.
ADVICE: consult your power-play reddit group or discord for priority targets, longterm strategies, wing-requests and general advice.
Do your powerplay combat in wings. It's more fun and all pilots who scored a hit against a target (tagged it) get full merits.
read some powerplay guides:
https://forums.frontier.co.uk/showthread.php/328362-Powerplay-Guids
And again: powerplay only gets fun if you play it with others. wing up for undermining or weaponized expansions and oppostion thereof. play in open. meet pilots from all powers at hot spots like expansions, head-quarters or important control-systems where they turn in merits. Engage them, talk to them, give them a fight. Have fun.