I am not a total expert but I can help as I have been doing this particular routine for a while to "tone up" LOL.
Firstly, starting with good food diet is the best idea. You should focus on protine-rich and nutrients-rich food and avoid food that has "bad fat" in it.
For example, I usually consume 6+ boiled eggs per day without yellow part and I eat tuna as well. With that I consume about 100 grams of protein which is ideal for me who doesn't want to build up too much muscle - just very moderate amount. Eating protein also ensures that u burn fat which I don't want.
But when I DO consume food with fat, I make sure it's plant-sourced fat which is considered "good". In terms of carbs, I take in high GI foods like bread + fruits. Low GI foods like lollies are pretty bad for you...they will just make you hyperactive...><
All in all, my diet is pretty healthy. I take in fair amount of protein and adequate amount of carbs here now and then while taking in small fat (but good fat lol). This diet plan also ensures nutrients are coming in well through bread, fruits and protein-rich food.
However, I also need to satisfy my taste-bud so I sometimes have a day when I kinda ignore my diet plan and eat whatever I want but I rarely do it.
EDIT: Simple exercise is good. Walking is considered the bext exercise. But to "tone up" slow movement with weight is good.
Im sorry i have to disagree with this post.
As a female, you don't want to focus to heavily on protein. Too much Protein without resistance training will turn to fat. It will do the opposite of tone. However if you were going to lift weights, then by all means, eat protein. But in females, protein without sufficient resistance training will lead to significant weight gain. If your looking to eat healthy + exercise then I recommend a carb focused diet. As carbs are your primary fuel source when engaging in aerobic activity, all carbs will be burnt whilest exercising. For example a good diet should include, wholemeal bread, pasta, salads, fruits and some meat/fish (for the protein).
As for the exercise part.
The best exercise for achieving health gains is cardio, ie, running, walking, swimming, cycling etc.
Im assuming you havn't been heavily involved in exercise before?
Probably best to start with a 30-40 minute walk twice a week for 3 weeks.
After those 3 weeks move up to an hour walk 3 times a week for another 3 weeks.
After six weeks of walking you should notice an increase in your cardio respiratory fitness, which means you should have no trouble jogging for say 30 minutes.
If you gradually progress from a walk up to a jog over say 6 weeks, and continue to jog say twice a week, you will notice significant gains ie stronger heart, as well as loosing a bit of weight by burning the carbs.
Note: You can switch up running/walking with cycling,swimming etc just make sure you start slow then gradually increase the intensity, duration and frequency every 3 weeks or so. This will ensure your fitness gains don't plateau.
As for toning up, follow what i mentioned above, (which will help you shed any weight), and then do simple exercises, such as sit ups, push ups, squats etc.
Do 2 lots of 10 sit ups every day for a week, then after a week do 2 lots of 15 etc etc.
This will help tighten/increase muscles worked eg abs.
Make sure you do the cardio as well as these exercises.
No use having a 6 pack underneath 2 cms of stomach fat.
Just my 2 cents.