Im tottally confused about the skills

your build is fine, and by plum bell i assume you mean plume shell? if so, then level it sparingly/when you have extra money and spirit, it is a very useful skill but is not a TOP priority as with your major healing skills.

don't worry if you accidentally level skills once or twice, as long as you do something in the game, you'll have unlimited coin and spirit to waste on skills.

the basic things you have to know are that Ironheart Blessing is the most important skill a cleric has and that you may level whatever skills you want.

Some important skills you may want to jot down are: steam of rejuvenation and chromatic healing beam, one is for spike healing, other for party healing.

IH blessing, SoR, and Chromatic are the 3 healing skills you will be using the most, be sure to also level purify on your spare coin and spirit, it will be used a lot later on. Also remember to level your buffs. As for your attack spells, prioritize them last, you won't really need them unless you plan to solo (which no one does after level 40 nowadays anyways)

Plume Bell.. Lol
Sorry it's very late at night and that just made me hysterical b:laugh
Thank you =D

now my 2 cents (i agree with Desire on most points if tl, dr)
Warning: this applies mostly to low and mid level, your base magic attack isnt high then so some skills come off as weak, and you usually dont have enough coins / spirit to level everything anyway so you must prioritize a little.
When you get to high level and become more powerful (and start having free sp too) your playstyle will change, and your opinion on some skills labeled 'useless' may change, even more when you become sage or demon. Though by then you will know for yourself which skills you use and like, so you will be able to decide for yourself.

1) things always up to level - main heal: ih, main attacks: plume shot, cyclone
2) things that are very useful, level if possible: metal mastery, buffs, wellspring (weak heal but fast cast so its a lifesaver), plume shell,
2a) revive - its a skill you level for others, lvl 1 is a must, rest depends on your preference (you can always demand people have angels) i have lvl 11 myself
3) skills you start using at medium levels and become really important at high: chromatic healing beam, purify (cant do fb 69 without both, cant kill krimson without puri)
4) skills to get as soon as possible: regeneration aura (aka bb) - squad heal and damage reduction; heavens wrath (aka rb) - attack boost for squad (this one you rarely use after 89 as it messess up demon spark)
5) skills to be kept at 1 at beginning and leveled when your matk rises: stream of rejuvenation, wield thunder, tempest
6) skills most pve clerics dont use before they come to high level, and some never use: seals
7) skills named 'useless' in guide for clerics stickied on this forum (very good one i used myself): thunderball, sirens kiss, blessing of the purehearted. Now, i started using thunderball at about 70s, sirens at 92, lvl 1 bop as chi builder from 60s-70s and lvl 11 as heal at 90 - a little illustration to my 'opinion changes' theory
8) skill to level only if you plan to use natural wings: flight mastery (wont work with cs wings or lvl 30 wings)

rest of skills are high level and you have lots of time to learn about them, but just to give my opinion:
lvl 79 skills i got guardian light myself (lifesaver for me), and faction sponsored apocalypse pages for wings of protection (lifesaver for anyone)
lvl 100 skills: i will probably try to get elven boon and skip seal of the god (im not in tw faction its a good seal but very expensive and pve use is very limited)

Don't worry, your build is fine. And you can always stop adding vit when you feel like you have enough and put these points into mag.

About blessing of the purehearted, i myself had lvled it to lvl 7 until I someone told me it was useless and i should use IH instead.
As the people above said, lvl IH, plume shot and cyclone to the max of your lvl. You will use those skills the most.
And don't worry.. Everyone started here as a noob (even though they don't think so), so it's not bad if you mess up with the skills a bit. Like I said, i did the same. Even now some of my priority skills aren't lvled to the max, because i think they work fine and i see more use in leveling other skills. My purify for example is just lvl 8, it works fine for me, and i lvled other skills instead.
As long as you'll be able to keep others and yourself alive you're fine (:

Plume shot, Ironheart Blessing and great cyclone before anything else. Then your buff skills, then plume shell and wield thunder and... Whatever else. My cleric is 5x, but this has never failed me. Also, you should cap your vit somewhere. 40 worked for me- more may work for you.