you asked about the order in which to tackle this problem. absolutely the most important thing is to keep the adrenals strong. so do that first and foremost and it is a good general rule to follow if you are sick or not. many organs have high tolerances... for example people live with clogged livers for years and years without feeling it, but once the adrenals go down it is bad news. the small intestine and colon can be filled with horrid putrefied waste and people can still function well. treat your adrenals well.
i think all of the information is on this forum already. vit c, an appropriate diet, certain herbs, salt, etc etc.
Liver Cleansing does not work the same way. some people can be in bad shape liver-wise, do some cleanses and do really well. same with intestinal cleansing. the adrenals are very delicate organs and if damaged it is a real challenge, if it is even possible, to heal.