You will have to get yourself to Lake Louise. From Calgary take the Trans Canada (1) west through Canmore, Banff, then Drive to Lake Louise along the #1. After driving by the Samson Mall area continue along the road up towards the Chateau. Park in the large parking lot with the hundreds of people.
Note you should get there early: while the parking lot is big it can fill up. Secondly you will avoid some of the crowd that forms in the first part of the route. The trail head is found along the lake to the right. When you reach the fork in the trail take the left which is signed to Lake Agnes.
Follow the obvious trail that winds its way gently to Lake Agnes then continues up, to the right winding its way through the scree to the summit. Depending on the weather there can be a couple of slippery sections (for which you should use caution) but nothing in the way of great difficulty. This is an excellent day of hiking/scrambling.
A good pair of hiking shoes. Always bring warm clothes and shell jacket as a backup should the weather turn bad. An ice axe as a precaution should there still be snow on the upper sections. This is a scramble on a regular trail (to the foot of the mountain) and then scree, slabs and possibly snow. But as always conditions of the route change according to the weather.
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