This is the best place for beginners to start.
in lumbridge, there is a bank, a range(where you can cook),some spots for fishing,an altar(where you can recharge your prayer points),an axe shop, a barracks(where you can train in melee, magic, range(arrows),Theres a farm in the north and there's also a mine in the south,There's also a furnace here.
If you want to train combat take out your sword and start killing the monsters in the western part of lum.Do this until level 10.My tip is not to concentrate on combat alone but every activity like woodcutting, mining, combat, cooking, smithing, fishing..

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