You make pouches. This requires charms, that can't be traded - you have to get them as drops from different monsters.
Summoning is trained by gathering charms and infusing them with pouches to create various familiars. This is the most effective way to train it.
Levels that effect combat level are constitution, attack, strength, defense, prayer, magic, ranged, and summoning.
Aasiwat with a total of 60,842,880 exp in Summoning, is the current No.1 in Summoning to-date.
Training you melee skills works great, but for members summoning is a good way to gain easy combat levels.
summoning
Taverly.
138 for members, and 126 for f2p.138 for p2p as the new summoning skill adds one combat level for a certain amount of summoning levels gained.hence the availability to reach level 138 is only for p2p since summoning is a p2p skill.
I placed a link below in the "Related Links" section that should be able to help you out.
You take charms, pouches, spirit shards, and secondary summoning ingredients to a summoning obelisk.
Steel Titan, by far.
Speak to Pikkupstix in Taverly.
There is a summoning obelisk Northeast of edgeville, that will recharge your summoning points. However I believe the nearest obelisk you can create summoning scrolls/ pouches is at Taverly